struts -- Cannot find bean under name indexedWorkInProgressVO

Hi All, I have a jsp page which displays valus by reading a list objects. it workd fine when the list has values. but when the list is empty, I see below error message.

I have a drop down also there in my code to display ...can some one have a look at my code and see why it is even going into the loop when the size is zero (0)?

Here is the code

even i tried having a 'IF' condition saying enter the 'for' loop only when the list size is more than zero. I dont see the print out statement in the 'IF' loop when the list size is zero but i get the error saying 'indexedWorkInProgressVO' cant be find. I am guessing this is something to do with the drop down list? <html:select>? can any one give me some guidence to how to go about?